20071516 has 6 divisors (see below), whose sum is σ = 35125160. Its totient is φ = 10035756.

The previous prime is 20071483. The next prime is 20071517. The reversal of 20071516 is 61517002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20071517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2508936 + ... + 2508943.

Almost surely, 2^20071516 is an apocalyptic number.

It is an amenable number.

20071516 is a deficient number, since it is larger than the sum of its proper divisors (15053644).

20071516 is a wasteful number, since it uses less digits than its factorization.

20071516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017883 (or 5017881 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 20071516 is about 4480.1245518400. The cubic root of 20071516 is about 271.7649172689.

Adding to 20071516 its reverse (61517002), we get a palindrome (81588518).

The spelling of 20071516 in words is "twenty million, seventy-one thousand, five hundred sixteen".